Could not load host key: /etc/ssh/ssh_host_ed25519_key

Sep 29 19:19:41 wopr sshd[11801]: error: Could not load host key: /etc/ssh/ssh_host_ed25519_key

If you’re getting this error message in the log file, you most likely have the ed25519 HostKey enabled in your sshd_config file but for some reason, no host key was generated for it.

Since openssh-6.4 you can run the ssh-keygen command to generate any missing host keys:

$ ssh-keygen -A
ssh-keygen: generating new host keys: ED25519

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